Merge pull request #11 from KevinVlaanderen/master

Fix buttons that are only enabled when one or more items are selected

Author: JelteMX

dist/TreeView.mpk

@@ -235,7 +235,9 @@ mxui.widget.declare("TreeView.widget.GridView", {
 				callback : dojo.hitch(this, this.onSelect, item),
 				error : this.showError
 			}, this);
-		}
+		} else {
+            this.showError(item);
+        }
 	},
 
 	hasSelection : function() {